/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apereo.portal.spring.context;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationEvent;
import org.springframework.util.Assert;

/**
 * Instance of Event Handler that delegates to Commons Logging and writes out events at the INFO
 * level.
 *
 * @since 2.6
 */
public final class LoggingEventHandler extends FilteringApplicationListener<ApplicationEvent> {
    private Logger eventLogger = LoggerFactory.getLogger(getClass());

    /** @param logCategory A custom log category to use */
    public void setLogCategory(String logCategory) {
        Assert.notNull(logCategory);
        this.eventLogger = LoggerFactory.getLogger(logCategory);
    }

    /* (non-Javadoc)
     * @see org.apereo.portal.spring.context.FilteringApplicationListener#onFilteredApplicationEvent(org.springframework.context.ApplicationEvent)
     */
    @Override
    protected void onFilteredApplicationEvent(ApplicationEvent event) {
        if (this.eventLogger.isInfoEnabled()) {
            this.eventLogger.info(event.toString());
        }
    }
}
